JEEP · 2025-06-25
Flash: Powertrain Control Module (PCM) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician must find one or more of the following Diagnostic Trouble Codes (DTCs) have been set: ● U0168 - Lost Communication With Vehicle Security Control Module. ● P0629 - Fuel Pump Control Circuit High. ● P0171 - Fuel system Lean. ● P0087 - Fuel Rail Pressure Too Low - Bank 1. Customers may also experience one or more of the following: ● Vehicle not starting. ● Variable speed fuel pump doesn't start after refueling. ● The Instrument Panel Cluster (IPC) unable to calculate the instantaneous fuel economy under heavy acceleration. ● The oxygen sensor can give incorrect values when entering Electric Vehicle (EV) mode. False fault detection…